BBC Weather Centre
Current conditions and five day forecast.
Metcheck.com
Provides full 48 hour and 7 day daily updated forecasts.
Prague Weather
Six day forecast for the city, including satellite map and webcam.
Weather Underground
Includes current conditions, 5 day forecast for night and day and historical conditions.
Weather.com
Current conditions, a ten day forecast and satellite images, plus a temperature converter.
Yahoo! Weather
Current conditions and four day forecast, plus satellite images and videos.